1/*
2 * arch/xtensa/mm/pgtable.c
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License.  See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 *
10 * Chris Zankel <chris@zankel.net>
11 */
12
13#if (DCACHE_SIZE > PAGE_SIZE)
14
15pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
16{
17	pte_t *pte = NULL, *p;
18	int color = ADDR_COLOR(address);
19	int i;
20
21	p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER);
22
23	if (likely(p)) {
24		split_page(virt_to_page(p), COLOR_ORDER);
25
26		for (i = 0; i < COLOR_SIZE; i++) {
27			if (ADDR_COLOR(p) == color)
28				pte = p;
29			else
30				free_page(p);
31			p += PTRS_PER_PTE;
32		}
33		clear_page(pte);
34	}
35	return pte;
36}
37
38#ifdef PROFILING
39
40int mask;
41int hit;
42int flush;
43
44#endif
45
46struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address)
47{
48	struct page *page = NULL, *p;
49	int color = ADDR_COLOR(address);
50
51	p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
52
53	if (likely(p)) {
54		split_page(p, COLOR_ORDER);
55
56		for (i = 0; i < PAGE_ORDER; i++) {
57			if (PADDR_COLOR(page_address(p)) == color)
58				page = p;
59			else
60				__free_page(p);
61			p++;
62		}
63		clear_highpage(page);
64	}
65
66	return page;
67}
68
69#endif
70